Reciprocatory mechanism



K. STRDTER RECIPROCATORY* MECHANISH Filed July 31. 1926 Sept. 10, 1929.

Patented sept. 1o, 1929.`

UNITED STA naar. s'rnn'rnn, or

Bocnurr, GERMANY.

RECIPROQATORY MECHANISM.

v Iliplicaton ledJuly 31', 1926, Serial No This invention relates to improvements in devices such as jigger devices and particularly to conveyers of this type.

In shaker conveyers driven from a rotary member such as for example the shaft of an electric motor, the comparatively complicated transmission gear between the driving member and the conveyer was, hitherto, more or less unprotected, and was in consequence,

1o especially when used in mines, exposed to the very detrimental eiects of dirt and moisture and also to the danger of being damaged.

In contradistinction thereto, according to the present invention, the entire driving gear or its more important or sensitive components is or are enclosed completel by being disposed'in a casing with a movab e wall, the motion of the motor being transmitted to this movable wall which in turn transmits to the conveyer the movement imparted toit 'and which is connected to the rest of the casing in such a manner that even when executing its operative movements, the casing remains closed.

Complete enclosure of the driving elements also allows of the employment of'sensitive, precisely cut gear wheels, such as for example wheels with helical teeth which result in smooth and uniform o ration and more fa-` vourable meshing conditions than is the case with pinions with straight teeth and which also enable larger gear ratios to be employed than the latter. Moreover, the enclosure of the driving gear provides suiiicient protection against dirt and rust and allows the gear to be eiiiciently lubricated which ma be readily effected by runningthe gear w eels in an oil bath in the casing.

Four modiications of the invention are illustrated by way of example in the accompanying drawings, in which: v

Fig.v` 1 is a longitudinal section (on I--I `of Fig'. 2) of one modiiication,

Fig. 2 is a cross section thereof (on II-II Fig. l),

' Y Fi 3 isa horizontal A(on III- III Fig. 1), Y

Fig. .4 illustrates a second modification,

' Fig.v5 a third modification, and

section of the vsame vconditions th 126,301, and in Germany March9, 1926.

Fig. 6 a fourth modification, the three last iigures being longitudinal sections.

The casing kv containing the driving gear for the conve er has a wall which moves thereon in a ust-tight manner, sliding for example in a groove-guide or rolling on rolling members. In the constructions illustrated in the accompanying drawings this wall is a cover n which is movable in the manner stated and which in the example illustrated in Figs. 1-3 receives a reciprocatory movement from the toothed rocker e.

The cover transmits its movement to the conveyer r which may be secured thereto, as conditions demand, either directly or throu h the intermediary of buffer members p. The movement of the wallI or cover n may, however, be transmitted to the conveyer indirectly through any desired intermediate members such as rods, levers, ro es', chains or 7o the like or the cover may be a apted to form la part of the conveyer itself. The length of .the wall or cover fn, is` made so great that in both its end positions it covers the casing c. The transmission gear between the motor m and the conveyer r consists of a pair of gear wheels h z' with straight teeth, two gear wheels a b with helical teeth, a crank-shaft c, a connecting rod d and a rocker member e. The gear a b consists of two pairs of gear wheels S0 which are arran ed on either sideoi the crank c, the teet -of corresponding wheelsd of each pair having oppositely directed hell ices so that no axial thrustis exerted on thel shaft.

The gear wheels b are mounted ldirectly on squared portions on the crank shaft c as l this arrangement ensures a safer power transmission than keys or the like. The connecting rod d consists of a frame in which o two bearings f are mounted in such a manner that the said bearings may be adjusted by means of a wedge/ or the like. The gear I h z consists of an internally toothed {lywheel and a pinion, this arrangementhaving the advantage 'of occupying .little space and providing not only protection for the inion, but also more favorable meshing an would be the case if the pinion were arranged on the outside. Fur- ,100

ther, the internal arrangement of the pinion oifers the possibility of employing the iiywheel as a pulley for a belt drive. If necessary a second y-Wheel y' may also be provided.

A particularly suitable conveyer movement may be obtained with this construction of gear by making the rocker e (F ig. 4) as nected therewith through a rocker or the like.

Instead of being made reciprocatory the wall ar cover a may also be adapted to be oscillatory as is illustrated in F ig. 6. In

this case the .part n is so disposed in the casing la, or the casing is so shaped, that the part n remains, in its oscillatory operative movement, between the-lateral walls of the casing. The oscillatory movement presents the advantage of obviating sliding or rolling friction.

I claima- 1.- In a drive for reciprocatory mechanism such as a jigger conveyer, in combination, a reciprocable element, driving gearing therefor, a casing enclosing the essential parts of the driving gearing, said-casing having an open face, a movable casing wall adapted to close entirely the open face ofthe ucasing,

' the driving gearing being operatively connected to the reciprocable'element through the intermediary of the movable casing wall.

2. In a device for reciprocatory mechanism such as a jigger conveyer, in combination, a reciprocable element, a driving gear casing having one face open, a movable casing wall operatively connected to the reciprocableelement, gearing in thehcasing including a crank shaft, a prime mover operatively connected to the gearing, and means .for operatively connecting the crank shaft to the reciprocable element through the intermediary of the movable casing Wall, said movable casing wall covering entirely the open face of the casing while in motion as well as while stationary.

3. In a device for reciprocatory mech-l' anism such as' a jigger conveyer, in combination, a reciprocable element, a drive gear casing having one -face open, a movable casing wall operatively connected to the reciprocable element, a shaft journalled in the casing, a prime mover operatively connected to the shaft, a pinion on the shaft, a crank shaft, a gear on the crank shaft meshing with the inion and means for operatively connecting the crank shaft to the reciprocable element through the intermediary of the movable casing wall, said movable casing wall covering entirely the open face of the casing while in motion as well as while stationary.

In testimony whereof I have signed my name.

DR. ING. KARL STRD'IER. 

